WIKA LH-10 Specifications

Electronic
pressure measurement

High-performance submersible pressure transmitter
For level measurement
Model LH-10

Applications

■

Level measurement in rivers and lakes

■

Deep well and groundwater monitoring

■

Level measurement in vessel and storage systems

■

Control of sewage lift and pumping stations

■

Monitoring of sewage, settling and stormwater retention
basins

WIKA data sheet PE 81.09

Special features

■

Precise and reliable

■

Integrated temperature measurement (option)

■

Design out of Hastelloy and FEP cable for especially
high resistance (option)

■

Ingress protection IP 68 permanently up to 984 ft (300 m)
water column

Description

For demanding measurement tasks

The model LH-10 submersible pressure transmitter has been
designed for level measurement in contact with the medium

in harsh operating conditions. It oers an accuracy of 0.25 %

and, with an ingress protection of IP 68, is suitable for perma­nent level measurements up to 984 ft. (300 m) water column.

It oers excellent quality, is reliable and, through a multitude

of options, can be used in all conventional level measure­ment applications. For instance, integrated temperature
measurement, lightning protection, a Hastelloy
cable are available as options.



case or FEP

Submersible pressure transmitter model LH-10
Fig. left: with PUR cable



Fig. right: in Hastelloy

Robust and reliable

A hermetically-sealed, fully-welded and exceptionally robust

stainless steel case ensures a long service life and perma­nent sealing.

Specically for external applications, integrated lightning
protection is available, in order to ensure a maximum

operating life in harsh environments.

For the highest media resistance, this submersible pressure
transmitter is available in an optional design out of Hastelloy
and high-resistance FEP cable.

with FEP cable



For the highest accuracy requirements, the optional tempera-

ture measurement enables the compensation of temperature

uctuations in the medium on the measuring result.

Data sheets showing similar products:
Submersible pressure transmitter; model LS-10; see data sheet PE 81.55
High-performance submersible pressure transmitter; model LH-20; see data sheet PE 81.56
Intrinsically safe submersible pressure transmitter; model IL-10; see data sheet PE 81.23

Page 1 of 7WIKA data sheet PE 81.09 ∙ 01/2016

Measuring ranges

Relative pressure

bar Measuring range 0 ... 0.1 0 ... 0.16 0 ... 0.25 0 ... 0.4 0 ... 0.6

Overpressure limit 1 1.5 2 2 3

Burst pressure 2 2 2.4 2.4 4

Measuring range 0 ... 1 0 ... 1.6 0 ... 2.5 0 ... 4 0 ... 6

Overpressure limit 5 8 8 10 10

Burst pressure 6 10 10 10 10

Measuring range 0 ... 10 0 ... 16 0 ... 25

Overpressure limit 10 16 25

Burst pressure 10 16 25

inWC Measuring range 0 ... 50 0 ... 100 0 ... 150 0 ... 250

Overpressure limit 750 750 750 1,100

Burst pressure 950 950 950 1,600

psi Measuring range 0 ... 5 0 ... 10 0 ... 15 0 ... 25 0 ... 50

Overpressure limit 30 45 70 120 150

Burst pressure 35 60 90 180 150

Measuring range 0 ... 100 0 ... 150 0 ... 160 0 ... 200 0 ... 300

Overpressure limit 150 150 160 200 300

Burst pressure 150 150 160 200 300

O Measuring range 0 ... 1 0 ... 1.6 0 ... 2.5 0 ... 4 0 ... 6

mH

2

Overpressure limit 10 15 20 20 30

Burst pressure 20 20 24 24 40

Measuring range 0 ... 10 0 ... 16 0 ... 25 0 ... 40 0 .. 60

Overpressure limit 50 80 80 100 100

Burst pressure 60 100 100 100 100

Measuring range 0 ... 100 0 ... 160 0 ... 250

Overpressure limit 100 160 250

Burst pressure

100 160 250

When choosing the FEP cable, only measuring ranges up to 0 ...10 bar, 0 ... 150 psi and 0 ... 100 mH2O are available.
The given measuring ranges are also available in mbar, kPA and MPa.

Output signals

Signal type Signal

Current (2-wire) 4 ... 20 mA

Current (3-wire) 0 ... 20 mA
Voltage (3-wire) DC 0 ... 5 V

DC 0 ... 10 V
DC 0.5 ... 2.5 V

Load in Ω

■

Current output (2-wire):

Voltage supply

Power supply

The power supply depends on the selected output signal.

■

4 ... 20 mA: DC 10 ... 30 V

■

0 ... 20 mA: DC 10 ... 30 V

■

DC 0 ... 5 V: DC 10 ... 30 V

■

DC 0 ... 10 V: DC 14 ... 30 V

■

DC 0.5 ... 2.5 V: DC 5 ... 30 V (suitable for battery opera-

tion)

≤ (power supply - 10 V) / 0.02 A (cable length in m x 0.14 Ω)

■

Current output (3-wire):

≤ (power supply - 3 V) / 0.02 A (cable length in m x 0.14 Ω)

■

Voltage output (3-wire):

> 100 kΩ

Page 2 of 7 WIKA data sheet PE 81.09 ∙ 01/2016

Reference conditions

Operating conditions

Temperature

59 ... 77 °F (15 ... 25 °C)

Atmospheric pressure

12.5 ... 15.4 psi (860 ... 1,060 mbar)

Humidity

45 ... 75 % relative

Mounting position

Calibrated in vertical mounting position with pressure
connection facing downwards.

Power supply

DC 24 V

Accuracy data

Accuracy at reference conditions

Measuring ranges < 3.6 psi: ≤ ±0.50 % of span
Measuring ranges ≥ 3.6 psi: ≤ ±0.25 % of span

Including non-linearity, hysteresis, zero oset and end value

deviation (corresponds to measured error per IEC 61298-2).

Non-linearity (per IEC 61298-2)

≤ ±0.2 % of span

Non-repeatability

≤ ±0.1 % of span

Ingress protection (per IEC 60529)

IP 68

Lightning protection (option)

1.5 J per EN 61000-4-5

The option of lightning protection is not available in combina­tion with the Hastelloy



case version.

Permissible temperature ranges

■

Medium

- PUR cable: 14 ... 122 °F (-10 ... +50 °C)

- FEP cable: 14 ... 185 °F (-10 ... +85 °C)

■

Ambient: 14 ... 122 °F (-10 ... +50 °C)

■

Storage: -22 ... 176 °F (-30 ... +80 °C)

Submersion depths

■

Submersible pressure transmitter with FEP cable:
up to 328 ft. (100 m)

■

Submersible pressure transmitter with PUR cable:
up to 984 ft. (300 m)

Maximum tensile strength of the cable

■

FEP cable: up to 350 N without strain relief

up to 500 N with strain relief

■

PUR cable: up to 350 N without strain relief

up to 1,000 N with strain relief

Weight

■

Level probe approx. 0.44 lbs. (200 g)

■

Cable: approx. 0.054 lbs/ft (80 g/m)

■

Additional weight
(accessories): approx. 1.1 lbs. (500 g)

Temperature error at 32 ... 176 °F (0 ... 50 °C)

■

Mean temperature coecient of zero point
Measuring ranges ≤ 0.25 bar: ≤ ±0.4 % of span/10 K

Measuring ranges > 0.25 bar: ≤ ±0.2 % of span/10 K

■

Mean temperature coecient of span
≤ ±0.2 % of span/10 K

Long-term stability at reference conditions

≤ ±0.2 % of span/year

Additional temperature measurement
(option)

The submersible pressure transmitter is optionally available
with a Pt100 measuring element for recording the medium
temperature.
The option of additional temperature measurement is not
available in combination with the Hastelloy

Specications:

■

Pt100 per DIN EN 60751

■

4-wire technology

■

Measuring range -58 ... 185 °F (-50 ... +85 °C)

■

Total current consumption 3 mA

■

Measurement current 1 mA



case version.

Page 3 of 7WIKA data sheet PE 81.09 ∙ 01/2016